US Bridges

Mason RD NB over Mason CR

Fair

Harris County, Texas · 0.30 MI N of IH10 · Structure no. 121020AA2581004

Built
1977
48 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
150 ft
3 main spans
Daily traffic
16,745
2016 count
Owner
County
County Highway Agency

About this bridge

Mason RD NB over Mason CR is a prestressed concrete box beam or girders - multiple carrying Mason RD NB over Mason CR in Harris County, Texas. It was built in 1977, so it is 48 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 16,745 vehicles a day, roughly 1% of them trucks, projected to reach 11,000 by 2033. The structure is 150 ft (45.7 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesMason RD NB
CrossesMason CR
Location0.30 MI N of IH10
RouteCounty Highway 0
CountyHarris County
StateTexas
Coordinates29.79103, -95.75193
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length150 ft (45.7 m)
Longest span50 ft (15.2 m)
Deck width32 ft (9.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,745 (2016)
Projected traffic11,000 by 2033
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$9,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mason RD NB over Mason CR built?

It was built in 1977, making it 48 years old in 2025.

What condition is Mason RD NB over Mason CR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does Mason RD NB over Mason CR carry?

About 16,745 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Mason RD NB over Mason CR?

The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.2 m) and a deck 32 ft wide.

Who owns Mason RD NB over Mason CR?

It is owned by the County Highway Agency.